The five broadcast television networks will be rolling out 23 new one-hour dramas for the upcoming season. That would normally be good business for Hollywood's hometown industry — with bookings for soundstages and plenty of work for the costumers, camera operators and caterers needed to put a show on the air.

But not this year. Just two of the 23 new fall and midseason shows will be shot in Los Angeles County, as cost-conscious producers seek tax-friendly production havens in New York, North Carolina, Georgia and other states.

The exodus has been going on for years, especially in feature film production. But television dramas such as"CSI,""Criminal Minds"and"Desperate Housewives"have long been anchors of Los Angeles' entertainment economy, helping to offset the decade-long slide in moviemaking. One 22-episode-a-year network series has a budget of $60 million and generates 840 direct and indirect jobs, according to the Los Angeles County Economic Development Corp.